[R] merge two vectors of the same length into one?

[Zhiqiang Ye]

> AB AA BA CC DC
>   2  1  1  1  1
>

Yeah, thank you two for your help.  BTW, can I change the output like this way:

AB  2
AA  1
BA  1
CC  1
DC  1

Thanks a lot!

--
Zhiqiang Ye